Question

private void attendence_Load（object sender，EventArgs e） {

        SqlConnection conn = new SqlConnection(cls_Connection.connection);
        conn.Open();
        SqlCommand cmd = new SqlCommand("select type from emp_type",conn);
        SqlDataReader reader = cmd.ExecuteReader();
        while(reader.Read())
        {
            atten_cmb_type.Items.Add(reader["type"]);

        }
        reader.Close();

        conn.Close();

    }

    private void atten_cmb_id_SelectedIndexChanged(object sender, EventArgs e)
    {
        SqlConnection sq = new SqlConnection(cls_Connection.connection);
        sq.Open();
        SqlDataAdapter ss = new SqlDataAdapter();


        ss.SelectCommand = new SqlCommand("select id,Name,type from Employee_Details where type='"+atten_cmb_type.Text+"'", sq);
        DataTable dt = new DataTable();
        ss.Fill(dt);
        dgv_attendence.Visible = true;

        dgv_attendence.DataSource = dt;


        sq.Close();

    }









    string id = "";
    string name = "";
    string type = "";
    string date = "";
    string month = "";
    string attendance = "";
    string year = "";
    int a = 0;



    private void button1_Click(object sender, EventArgs e)
    {   
        id = lbl_Id.Text;
        name = lbl_Name.Text;
        type = atten_cmb_type.Text;
        date = dateTimePicker1.Value.ToString("dd");
        month = dateTimePicker1.Value.ToString("MMMM");
        year = dateTimePicker1.Value.ToString("yyyy");

        int j = 0;
        foreach (DataGridViewRow row in dgv_attendence.Rows)
        {
            if (row.Cells[j].Value != null)
            {
                if ((Boolean)row.Cells[j].Value == true)
                {
                    attendance = "Present";
                }
                else if ((Boolean)row.Cells[j].Value == false)
                {
                    attendance = "Absent";
                }
            }
            j++;
        }






            SqlConnection con = new SqlConnection(cls_Connection.connection);
            SqlDataAdapter sda = new SqlDataAdapter();
            sda.SelectCommand = new SqlCommand("Select * from attendence where id = '" + id+"'" + " AND date = '" + date+"'",con);

            con.Open();
            DataTable dt = new DataTable();

            sda.SelectCommand.ExecuteNonQuery();    
            sda.Fill(dt);
            if (dt.Rows.Count < 1)
            {




                for (int i = 0; i < dgv_attendence.Rows.Count;i++)
                {
                    SqlCommand cmd = new SqlCommand("insert into attendence(id,Name,type,date,month,attendence,year) values('" + dgv_attendence.Rows[i].Cells[1].Value + "','" + dgv_attendence.Rows[i].Cells[2].Value + "','" + dgv_attendence.Rows[i].Cells[3].Value + "','" + date + "','" + month + "','" + attendance + "','" + year + "')", con);
                    cmd.ExecuteNonQuery();
                }


                MessageBox.Show("success");

                con.Close();


            }
            else
            {
                MessageBox.Show("Record already exists");
            }





    }

这是我的代码。首先，我从1个employee_details表的3列填写gridview。同样的列也出现在考勤表中。现在，当我点击按钮时，这三列将按原样放入考勤表，其余列从各种控件中取出

Answer 1

你使用Cells [0]是正确的。问题是你不对你的结果做任何事情。所以你遍历所有这些，然后考勤将等于最后一行的值。

更改循环以保留所有出勤值的列表。如果表中有一个单元格更新会更好，但这样可行：

   List<string> listAttendance = new List<string>();
    foreach (DataGridViewRow row in dgv_attendence.Rows)
    {
        if (row.Cells[0].Value != null && (Boolean)row.Cells[0].Value == true )
        {
           attendance = "Present";
        }
        else
        {
            attendance = "Absent";
        }
        listAttendance.Add( attendance);
     }

然后你的cmd改为使用“listAttendance [i]”而不是“出勤”。

           SqlCommand cmd = new SqlCommand("insert into attendence(id,Name,type,date,month,attendence,year) values('" + dgv_attendence.Rows[i].Cells[1].Value + "','" + dgv_attendence.Rows[i].Cells[2].Value + "','" + dgv_attendence.Rows[i].Cells[3].Value + "','" + date + "','" + month + "','" + listAttendance[i] + "','" + year + "')", con);

Answer 2

或者您可以在写入数据库的循环内移动字符串逻辑：（并完全摆脱与你一起工作的另一个循环＆＃34;现在＆＃34;以及＆＃34;缺席＆＃34;）

for (int i = 0; i < dgv_attendence.Rows.Count;i++)
{
    if ( dgv_attendence.Rows[i].Cells[0].Value != null && (Boolean)dgv_attendence.Rows[i].Cells[0].Value == true)
    {
        attendance = "Present";
    }
    else
    {
        attendance = "Absent";
    }
    SqlCommand cmd = new SqlCommand("insert into attendence(id,Name,type,date,month,attendence,year) values('" + dgv_attendence.Rows[i].Cells[1].Value + "','" + dgv_attendence.Rows[i].Cells[2].Value + "','" + dgv_attendence.Rows[i].Cells[3].Value + "','" + date + "','" + month + "','" + attendance + "','" + year + "')", con);
    cmd.ExecuteNonQuery();        
}

更改数据网格视图中使用的复选框的值来自＆＃34; true＆＃34;到我自己选择的文本值

2 个答案: